I was surprised at the amount of flow. According to my charts 3/4" can flow up to 40gpm and 1" can flow up to 60gpm, so it might be feasible. 7 rotors with 2.5gpm nozzles were fogging pretty badly. I was really surprised with 120psi dynamic pressure with 7 rotors running, granted everything was going downhill with probably 20-30' elevation drop.